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Triglycerides

Triglycerides are the body's main form of fat storage and, at the same time, a metabolic marker whose high plasma levels are associated with increased cardiovascular risk, especially in the context of metabolic syndrome, di… Read more.

9 factors with evidence, ordered from highest to lowest effectiveness. Information, not medical advice.

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In depth

⏱ 2 min read

Triglycerides are the body's main form of fat storage and, at the same time, a metabolic marker whose high plasma levels are associated with increased cardiovascular risk, especially in the context of metabolic syndrome, diabetes, and insulin resistance; high triglycerides tend to travel together with low HDL and small, dense LDL particles (atherogenic dyslipidemia), a profile more predictive of cardiovascular events than LDL alone in people with metabolic dysfunction.

Numbers

  • Optimal: < 100 mg/dL
  • Normal: < 150 mg/dL
  • Mildly elevated: 150-199
  • High: 200-499
  • Very high: ≥ 500 (risk of acute pancreatitis added to cardiovascular risk)

Common causes

  • Insulin resistance / metabolic syndrome / type 2 diabetes: the most common cause.
  • Obesity (especially visceral).
  • High intake of added sugars, concentrated fructose, and refined carbohydrates.
  • Alcohol: the most underestimated source of acquired hypertriglyceridemia.
  • Sedentary lifestyle.
  • Hypothyroidism.
  • Nephrotic syndrome.
  • Some drugs: corticosteroids, retinoids, oral estrogens, atypical antipsychotics, antiretrovirals.
  • Familial hypertriglyceridemia: when there are very high values in the absence of acquired causes.

Nutritional interventions with support

Reduce added sugars and concentrated fructose (juices, sugary drinks, sweets, ultra-processed foods): the most effective dietary intervention for triglycerides.

Reduce alcohol significantly or eliminate it: often enough to normalize moderately elevated values.

Reduce refined carbohydrates, prefer whole grains.

Increase soluble fiber.

Weight loss if overweight/obese: each kilogram lost modestly reduces triglycerides.

Regular physical exercise: aerobic exercise is especially effective for triglycerides.

Mediterranean diet: reduces triglycerides significantly.

Supplements with strong clinical support

Omega-3 EPA/DHA: the supplement intervention with the best support for triglycerides. Doses of 2-4 g/day reduce triglycerides 20-30%. The REDUCE-IT trial with icosapent ethyl (pure EPA at 4 g/day) showed a significant reduction in cardiovascular events in people with high triglycerides despite optimized statins.

Berberine: modest effect on triglycerides along with improvement in glycemia and LDL.

Red yeast rice: effect mainly on LDL but also modest on triglycerides.

Citrus bergamot: modest support.

Psyllium and soluble fibers: modest effect.

Pharmacological niacin: potent on triglycerides, but large modern trials show no added reduction in events on top of optimized statins; limited use.

Drugs: when they are needed

In very high triglycerides (≥ 500 mg/dL) with risk of pancreatitis: - Fibrates (fenofibrate, gemfibrozil): first line for severe hypertriglyceridemia. - Icosapent ethyl (4 g/day): with specific cardiovascular support (REDUCE-IT). - Combination with statins when LDL is also elevated.

The reasonable conclusion

High triglycerides in the vast majority of cases are the consequence of a lifestyle with an excess of refined carbohydrates, added sugars, alcohol, and a sedentary routine in a person with insulin resistance; the most effective intervention is to tackle these causes with a Mediterranean diet, reduction of ultra-processed foods and liquid sugars, regular exercise, and weight loss if appropriate. Omega-3 EPA is the supplement with the best support. Drugs are indicated in severe hypertriglyceridemia or persistent high cardiovascular risk.

References

  1. Bhatt, D.L. et al. (2019). Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia (REDUCE-IT). N Engl J Med 380, 1. doi:10.1056/NEJMoa1812792
  2. Skulas-Ray, A.C. et al. (2019). Omega-3 fatty acids for the management of hypertriglyceridemia: a science advisory from the American Heart Association. Circulation 140, 12. doi:10.1161/CIR.0000000000000709
  3. Stanhope, K.L. et al. (2009). Consuming fructose-sweetened, not glucose-sweetened, beverages increases visceral adiposity and lipids and decreases insulin sensitivity in overweight/obese humans. J Clin Invest 119, 5. doi:10.1172/JCI37385
  4. Lambert, J.E. et al. (2014). Postprandial metabolism of meal triglyceride in humans. Biochim Biophys Acta 1841, 4. doi:10.1016/j.bbalip.2013.07.012
  5. Sniderman, A.D. et al. (2014). Apolipoproteins versus lipids as indices of coronary risk and as targets for statin treatment. Lancet 384, 9943. doi:10.1016/S0140-6736(14)61009-6
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Triglycerides

⏱ 2 min read

Triglycerides are the body's main form of fat storage and, at the same time, a metabolic marker whose high plasma levels are associated with increased cardiovascular risk, especially in the context of metabolic syndrome, diabetes, and insulin resistance; high triglycerides tend to travel together with low HDL and small, dense LDL particles (atherogenic dyslipidemia), a profile more predictive of cardiovascular events than LDL alone in people with metabolic dysfunction.

Numbers

Common causes

Nutritional interventions with support

Reduce added sugars and concentrated fructose (juices, sugary drinks, sweets, ultra-processed foods): the most effective dietary intervention for triglycerides.

Reduce alcohol significantly or eliminate it: often enough to normalize moderately elevated values.

Reduce refined carbohydrates, prefer whole grains.

Increase soluble fiber.

Weight loss if overweight/obese: each kilogram lost modestly reduces triglycerides.

Regular physical exercise: aerobic exercise is especially effective for triglycerides.

Mediterranean diet: reduces triglycerides significantly.

Supplements with strong clinical support

Omega-3 EPA/DHA: the supplement intervention with the best support for triglycerides. Doses of 2-4 g/day reduce triglycerides 20-30%. The REDUCE-IT trial with icosapent ethyl (pure EPA at 4 g/day) showed a significant reduction in cardiovascular events in people with high triglycerides despite optimized statins.

Berberine: modest effect on triglycerides along with improvement in glycemia and LDL.

Red yeast rice: effect mainly on LDL but also modest on triglycerides.

Citrus bergamot: modest support.

Psyllium and soluble fibers: modest effect.

Pharmacological niacin: potent on triglycerides, but large modern trials show no added reduction in events on top of optimized statins; limited use.

Drugs: when they are needed

In very high triglycerides (≥ 500 mg/dL) with risk of pancreatitis: - Fibrates (fenofibrate, gemfibrozil): first line for severe hypertriglyceridemia. - Icosapent ethyl (4 g/day): with specific cardiovascular support (REDUCE-IT). - Combination with statins when LDL is also elevated.

The reasonable conclusion

High triglycerides in the vast majority of cases are the consequence of a lifestyle with an excess of refined carbohydrates, added sugars, alcohol, and a sedentary routine in a person with insulin resistance; the most effective intervention is to tackle these causes with a Mediterranean diet, reduction of ultra-processed foods and liquid sugars, regular exercise, and weight loss if appropriate. Omega-3 EPA is the supplement with the best support. Drugs are indicated in severe hypertriglyceridemia or persistent high cardiovascular risk.

References

  1. Bhatt, D.L. et al. (2019). Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia (REDUCE-IT). N Engl J Med 380, 1. doi:10.1056/NEJMoa1812792
  2. Skulas-Ray, A.C. et al. (2019). Omega-3 fatty acids for the management of hypertriglyceridemia: a science advisory from the American Heart Association. Circulation 140, 12. doi:10.1161/CIR.0000000000000709
  3. Stanhope, K.L. et al. (2009). Consuming fructose-sweetened, not glucose-sweetened, beverages increases visceral adiposity and lipids and decreases insulin sensitivity in overweight/obese humans. J Clin Invest 119, 5. doi:10.1172/JCI37385
  4. Lambert, J.E. et al. (2014). Postprandial metabolism of meal triglyceride in humans. Biochim Biophys Acta 1841, 4. doi:10.1016/j.bbalip.2013.07.012
  5. Sniderman, A.D. et al. (2014). Apolipoproteins versus lipids as indices of coronary risk and as targets for statin treatment. Lancet 384, 9943. doi:10.1016/S0140-6736(14)61009-6